CLAIM The ornamental design for a cocktail glass, as shown and described.

Description:

FIG. 1 is a perspective view of the cocktail glass illustrating our new design;

FIG. 2 is a front elevational view of the cocktail glass;

FIG. 3 is a rear elevational view of the cocktail glass;

FIG. 4 is a top plan view of the cocktail glass; and,

FIG. 5 is a bottom plan view of the cocktail glass.

The left and right sides of the cocktail glass are mirror images of one another. Additionally, the broken lines illustrate the bounds of the claimed design; the area enclosed by broken lines forms no part of the claim.